.pinYouGou_categories{
    height: 100%;
    width: 100%;
    display: flex;
    .pinYouGou_categories_left{
        width: 100px;
        background-color: #0a0;
        overflow: scroll;
        ul{
            width: 100%;
            li{
                width: 100%; 
            }
        }
    }
    .pinYouGou_categories_right{
        flex: 1;
        background-color: violet;
        overflow: scroll;
    }
}